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Safety-improved cardiac interatrial septum shunt system

A technology of shunt system and atrial septum, applied in parts of surgical instruments, medical science, heating surgical instruments, etc., can solve the problems of increasing ablation damage and risk, easy formation of thrombus, thrombosis, etc.

Pending Publication Date: 2021-05-07
HANGZHOU NOYA MEDTECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned technology has the following defects: the implant used for atrial shunt leaves a device at the stoma, which easily leads to thrombus formation, or the device falls off to form an embolism
In addition, when the myocardial tissue at the stoma is ablated, the tissue and blood adjacent to the ablation electrode are easily heated, resulting in tissue damage outside the preset ablation range and blood clot formation, which increases the damage and risk of ablation

Method used

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] In the description of the present invention, the tissue between the left atrium and the right atrium of the present invention is called interatrial septum, the "proximal end" refers to the end close to the connection position of the conveyor, and the "distal end" is the end far away from the conveyor One end of the connection location. The axial direction refers to the direction of the central axis of the device, and the radial direction r...

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Abstract

The invention provides a cardiac interatrial septum shunt system. The cardiac interatrial septum shunt system comprises an ablation member for ablating surrounding tissue of a perforated hole in an interatrial septum. The cardiac interatrial septum shunt system further comprises a perfusion member, wherein the perfusion member comprises a plurality of spraying holes and can be filled with a coolant, and the coolant in the perfusion member is sprayed to the vicinity of the perforated hole through the spraying holes so as to lower a temperature of tissue beyond a preset ablation range and blood around the tissue.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a percutaneous intervening cardiac atrial septal shunt system with improved safety. Background technique [0002] Heart failure (heart failure for short), is a complex clinical syndrome of impaired ventricular filling or ejection due to any structural or functional abnormality of the heart, the main clinical manifestations of which are dyspnea and fatigue (limited exercise tolerance), and Fluid retention (pulmonary congestion and peripheral edema). Heart failure is the severe and terminal stage of various heart diseases, with a high incidence rate, and is one of the most important cardiovascular diseases today. According to the location of heart failure, it can be divided into left heart failure, right heart failure and whole heart failure. [0003] Heart failure is a serious disease with high morbidity and mortality. The incidence of heart failure in my...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14
CPCA61B18/14A61B18/1492A61B2018/00029A61B2018/00273A61B2018/00285A61B2018/00357A61B2018/1405A61B2018/144A61B2018/1465
Inventor 王永胜石晓燕王坤
Owner HANGZHOU NOYA MEDTECH CO LTD
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